A Santa Ana doctor who was convicted of writing 22 prescriptions for Adderall in the names of ex-girlfriends for his own use, has been barred from practicing medicine after he failed to undergo required drug testing.

Dr. Brian Michael Swan was issued a cease practice order by the California Medical Board on Monday.

In 2013, Swan pleaded guilty to six misdeamenors. Prosecutors said he prescribed Adderall to the women but then picked up the prescriptions for his own use. Swan had been diagnosed with adult attention deficit hyperactivity disorder and participated in several drug treatment programs.

In 2014, Swan agreed to five years of medical board probation triggered by his illegal use of prescription drugs and subsequent conviction. The settlement with the board called for him to refrain from use of any controlled substances, unless prescribed by a doctor, and to undergo random drug testing.

According to the board, he failed to complete testing. Swan is prohibited from practicing medicine until the board decides whether to revoke his probation.

His attorney, Joseph Weimortz of Long Beach, did not respond to requests for comment.

Courtney Perkes has covered the medical beat for the Register since 2005. She was queasy when she watched surgery for the first time (a knee replacement) especially when a drop of blood splattered in her notebook! She loves writing about public health issues as well as the courage and resilience of patients facing illness. Courtney strives to lead a healthy lifestyle that includes yoga and not microwaving plastic. She is a graduate of Northwestern University's Medill School of Journalism.